Neighbourhood Green Space Research Articles

Gender and violent crime modify associations between greenspace and cardiovascular disease mortality in Philadelphia, PA

Few studies have explored variability of associations between greenspace and cardiovascular (CVD) mortality according to demographic or neighborhood contextual factors. We estimated overall and sex-stratified associations between greenspace and CVD mortality rates in Philadelphia, PA, and quantified effect modification of the sex-stratified associations by neighborhood violent crime rates. Sex- and age-stratified census tract CVD mortality rates (years 2008–2015) were linked with proportion tree canopy cover, grass/shrub cover, and total vegetation cover, and proportion of adult residents reporting access to a park. We used multivariable negative binomial models to estimate overall and sex-stratified associations between neighborhood greenspace and CVD mortality rates, and quantified effect modification by tract-level rates of violent crime. Higher proportion tree canopy cover and higher proportion adults reporting access to parks were associated with modestly lower rates of CVD mortality, with more pronounced estimates in males than females. In tracts with higher rates of crime, higher tree canopy coverage and perceived park access were associated with lower CVD mortality rates. We did not observe strong evidence of sex-based differences in interaction between neighborhood crime rates and greenspace. Results from this study reveal variability of associations between greenspace and CVD mortality rates according to sex categories, and according to neighborhood social environments. There is a need for further research exploring the extent to which differences in perceived safety explain gender-based differences in associations between greenspace and cardiovascular outcomes.

Using radiocarbon of plants to track inequity in urban environments

Societal Impact StatementOver half of Earth's human population lives in urban areas where pollution from fossil fuel combustion threatens urban air quality and public health. The isotopic composition of plant tissues can be used as a tool to estimate local variation in the amount of fossil fuel–derived carbon dioxide. We present a case study that examines this variation against the backdrop of historic discriminatory policies in Saint Paul, Minnesota, USA. Data suggest higher loads of atmospheric fossil carbon in neighborhood greenspaces that are situated closer to large roads, which often correspond with historical policies. Evidence of unequal fossil fuel combustion, and potentially pollution load, may precipitate changes in urban management or pollution mitigation strategies.

Social sustainability of neighbourhood parks in India - instrument content validity

Neighbourhood parks are the most proximate public spaces that promote physical and mental health, well-being and happiness, social cohesion, a sense of community, etc. This vital resource can help create socially sustainable neighbourhoods in global south cities. This paper aims to develop a validated assessment framework for the social sustainability of neighbourhood parks in India. Thematic literature analysis is used to construct an assessment instrument consisting of ten variables and eighty-one indicators related to the social sustainability of neighbourhood parks. The instrument is checked for content validity through expert review using the Content Validity Index. Use of parks by people engaged in informal economic enterprises in neighbourhoods and by non-residents, the significance of ‘third places’ in park use, safety concerns, and sociocultural aspects of perception of safety emerge as essential variables to be considered in the Indian context. The high CVI of the developed instrument indicates excellent content validity. The instrument is designed to assess the provision, user perception and social use of neighbourhood green spaces in Indian cities to promote social sustainability.

The impact of green space on nonaccidental and cause-specific mortality in the Adventist Health Study-2 population.

There is growing interest in evaluating the long-term health effects of neighborhood environments, particularly green space. However, only a limited body of research further incorporates multiple ambient air pollutants. This study looked at the relationship between green space, as measured by the Normalized Difference Vegetation Index, and mortality adjusted by key confounders in the Adventist Health Study-2, a longitudinal cohort study from 2002 to 2015, across the contiguous United States (N = 67,400). We used Cox proportional hazard regression models to assess the risk of nonaccidental, cardiovascular disease (CVD), ischemic heart disease (IHD), and respiratory disease mortality from green space around subjects' home address under multiple covariate and pollutant adjustments. We found a 0.1 unit increase in the Normalized Difference Vegetation Index was associated with nonaccidental (hazard ratio [HR]: 0.96 [95% confidence interval (CI): 0.93, 0.99]), CVD (HR: 0.94 [95% CI: 0.90, 0.98]), and IHD (HR: 0.87 [95% CI: 0.81, 0.94]) mortality, with the greatest precision in fully adjusted three-pollutant models using the 1000-m buffer. Effect estimates were strengthened in urban areas, when incorporating seasons, and for females. However, all associations between green space and respiratory mortality were null. This study supports evidence that increased neighborhood green space is inversely associated with nonaccidental, CVD, and IHD mortality, where the inclusion of multiple environmental covariates had a greater impact on effect estimate magnitude and precision than adjustment by individual lifestyle and health factors.

Neighborhood Greenspace, Extreme Heat Exposure, and Sleep Quality over Time among a Nationally Representative Sample of American Children.

Children's sleep is essential for healthy development, yet over a third of children in the United States experience inadequate sleep. Environmental factors can influence sleep: greenspace exposure can promote better sleep, while heat exposure can disrupt sleep. As global climate change raises nighttime and daytime temperatures, greenspace may mitigate the negative effects of heat stress on sleep. We examined the direct effects of neighborhood greenspace and extreme heat exposure on sleep and the statistical interaction between greenspace and heat exposure on sleep outcomes among a nationally representative, four-year longitudinal sample of 8580 U.S. children ages 9-10 years at baseline. Hierarchical linear models incorporated a neighborhood greenspace measure: percent open park space within individual child census tracts, a measure of extreme neighborhood heat exposure during the summer months, and extensive individual and neighborhood-level covariates to test main and interaction effects on child sleep quality. Neighborhood open park space was related to better sleep quality, after controlling for covariates. Additionally, neighborhood extreme heat exposure was associated with worse sleep quality. A two-way interaction was found between neighborhood open park space and neighborhood heat exposure on sleep quality, suggesting open park space mitigated the negative effects of heat on sleep. The results indicate the potential contribution of open greenspace to improve child sleep and enhance resilience to extreme heat, which is an adverse outcome of climate change.

Family poverty, neighbourhood greenspace and perinatal outcomes.

The relationship between low income and adverse perinatal outcomes, such as low birth weight and developmental delays, is well established making the search for protective factors important. One such factor may be neighbourhood greenspace. This study elucidates the role of urban neighbourhood greenspace in the relationship between income and perinatal outcomes in a nationally representative birth cohort from the UK. Data on 14 050 infants participating in the initial wave at age 9 months of the Millennium Cohort Study were used (51% male, 20% non-white, 52% living in disadvantaged areas). We tested whether the association between income and perinatal outcomes is moderated by urban greenspace (measured in deciles) before and after adjustments for confounding. The perinatal outcomes included birth weight, gestational age (in days), communication and motor delays. The models were adjusted for the infant's sex and ethnicity, mother's age, education, substance use and mental health as well as area disadvantage and air pollution. Neighbourhood greenspace moderated the association between income and gestational age, even after adjustment for all confounders, b=-0.11, 95% CI (-0.215, -0.004). For births in low-income households, in particular, it was associated with an increase in gestational age by an average of approximately 3 days. However, after adjustment, greenspace was not found to influence birth weight, communication or motor delays at age 9 months. The biophilic design of urban environments is a modifiable factor for improving perinatal outcomes in the UK as urban greenspaces appear to be mitigating the risk of preterm birth associated with family poverty.

Spatiotemporal variability of the association between greenspace exposure and depression in older adults in South Korea

Abstract Background A number of studies based on young to middle aged adult and child samples have found that exposure to greenspace and bluespace can have a positive impact on mental health and well-being. However, there is limited research among older adults and the extant studies have provided mixed results. The present study was designed to examine how the association between these forms of exposure and depressive symptoms among older adults varies as a function of different spatially and temporally resolved exposure metrics. Methods The sample consisted of 617 individuals (46.19% female) aged ≥ 60 years of age. Depressive symptoms were measured using the 10-item Center for Epidemiological Studies Depression Scale (CES-D). Individuals’ greenspace exposure was quantified using spatially and temporally resolved metrics, including monthly and annual averaged satellite-derived normalized difference vegetation index (NDVI) across multiple buffer distances (250 m to 2,000 m) centered at participants’ home address. We also quantified exposure to blue-greenspace from a highly detailed land use and land cover dataset. A multivariable logistic regression model assessed the association between greenspace and blue-greenspace exposure and depressive symptoms, adjusting for age, sex, income, education, marital status, current smoking, alcohol status, medical conditions, temperature, crime rate, population density, and per capita park area. Results We found a significant association between exposures to greenspace and blue-greenspace and depressive symptoms (CES-D cutoff ≥ 4) among older adults. After adjusting for confounding variables, the odds of depressive symptoms were significantly decreased by an IQR increment in residential exposure to greenspace [odds ratio (OR) = 0.67; 95% confidence interval (95% CI), 0.49 ~ 0.91] and blue-greenspace (OR = 0.59; 95% CI, 0.41 ~ 0.84) measured nearby their home address (i.e., as close as 250 m). When stratified by household income level, the association was only significant among low-income individuals. We also found temporal variation in the association between depressive symptoms and monthly NDVI-based greenspace exposure, in which the odds of depressive symptoms were the lowest for greenspace in cold months (i.e., January, February, and March). Conclusions Our findings suggest that neighborhood greenspace may serve as a protective factor against depression among older adults, but the benefits may depend on the spatial and temporal context. More investigation is needed to replicate our findings on the spatial and temporal variations of greenspace exposure metrics and their effects on depressive symptoms.

User experience of neighbourhood greenspace and perceived impact on health and wellbeing: the case of an urban extension to a ‘Healthy New Town’ in England

ABSTRACT Recognising the provision of public greenspace in urban areas as a key tool to supporting health and wellbeing, the UK government has committed to ensuring that, by 2043, all citizens can reach greenspace within 15 minutes from their homes. However, it is increasingly acknowledged that simply providing access to greenspace may not be enough to ensure that positive benefits are realised. Characteristics including their accessibility, size, aesthetics, features, condition and safety can all distinguish between greenspaces that encourage visitation and those that are uninviting. This paper reports a neighbourhood-level study of the residential development of Kingsmere, which forms a significant urban extension to Bicester, England, and was developed as part of the government-funded ‘Healthy New Town’ programme. A cross-sectional survey, including follow-up interviews, was conducted to investigate residents’ use of different types of greenspace, satisfaction, and the perceived impact on personal health and wellbeing. Findings reveal that the provision of a variety of greenspaces within a 15-20-minute walk of homes has been effective in terms of use and satisfaction but that attention to access within sites, perceived safety, cleanliness and maintenance are important factors that could encourage greater use and enhance user satisfaction.

Child health-friendly neighbourhood: a qualitative study to explore the perspectives and experiences of experts and mothers of children under 6 years of age in Tehran, Iran

ObjectivesCreating health-supportive environments is one of the key strategies for health promotion. The WHO launched the Healthy Cities Initiative which has inspired other international organisations to develop settings-based health initiatives,...

Neighborhood environments underpin screen time intervention success in children: Evidence from a study of greenspace and community programming across 130 US communities

The goal of this study was to understand how neighborhood greenspace access may support or hinder the effectiveness of community programs and policies (CPPs) aimed at reducing racial and ethnic inequities in screen time among 4598 US children. We found higher CPP intensity was significantly associated with fewer screen time behaviors in high greenspace neighborhoods, but not neighborhoods with low or moderate greenspace. Moreover, there were significant differences in greenspace access by neighborhood-level race and ethnicity. Implementing CPPs without regard for racial and ethnic greenspace inequities may be an underlying cause in the perpetuation of inequities in childhood screen time.

Urban and Rural Environments and Their Implications for Older Adults’ Adaptation to Heat Waves: A Systematic Review

The aim of this study is to synthesise the scientific evidence on the implications of urban and rural environments on older adults’ adaptation strategies to heatwaves. Methods: The methodology follows PRISMA guidelines, which involves a systematic search of the scientific literature in selected electronic databases, including Web of Science and Scopus, to assist in the selection, identification and retention of studies. Results: The search identified 4991 potentially eligible articles, of which 17 met the criteria, mainly from developed countries, emphasising a multidisciplinary approach and moderate to low quality. Urban and rural environments influence older adults’ adaptation strategies to heatwaves through the adequacy of the physical environment of the dwelling (design, materials, equipment) and the neighbourhood (green spaces, residential density, land use), the social environment (support network and type of assistance) and risk management (protective measures and heat warning systems). At the individual level, adaptation to heatwaves is determined by age, gender, health status, socio-economic status and social isolation. Discussion and conclusions: Differences in perceptions of heat adaptation were found according to location, typology and environmental characteristics, especially in developing countries. The findings contribute to promoting the adoption of protective measures, the design of heat warning systems, and the planning of friendly and resilient cities and rural communities to support the adaptation of an ageing society to the climate warming.

Understanding the factors of accessibility to the neighborhood green spaces that contribute to social cohesion: A systematic literature review

Green spaces are vital for urban health and quality of life, promoting social cohesiveness and interpersonal dynamics. However, 56% of the world’s population lives in cities without green spaces, affecting their health and psychological well-being. The limited number of neighborhood parks highlights the need to consider accessibility and its relationship with social cohesiveness. Social cohesion is crucial for community well-being and is linked to public spaces, especially in urban areas. Neighborhood green spaces promote social connections, reduce inequalities, and enhance community health. This research acknowledges the connection between accessibility and urban green spaces, but does not directly evaluate its impact. This systematic literature review aims to understand the factors of accessibility to neighborhood green spaces that contribute to social cohesion and their impact on physical and mental well-being, highlighting the lack of research on the interdependencies between these variables and their combined impact. The study utilized a keyword search on databases like Scopus, Research Gate, Google Scholar, Elsevier, Lens.org, and PubMed to identify 123 empirical research studies published between 2013 and 2022, conducted by 213 authors in 5 countries and 66 journals. The findings explore the factors influencing social cohesion, including socio-demographics, physical characteristics, non-physical variables, environmental perceptions, and usage patterns. It uses Vos viewer keyword co-occurrences analysis to create clusters, proposes a model to understand how these factors are linked to accessibility and directly influence social cohesion and provides insights into the relationship between these factors. Understanding these factors is essential for urban planning and policy-making.

Are Neighborhood Greenspaces Associated with Leisure-time Physical Activity? Results from ELSA-Brasil Eight-year Follow-up.

We investigated whether neighborhood greenspaces were associated with physical activity in adulthood over 3 cohort visits after considering perceived safety and neighborhood contextual factors. We also evaluated whether the association with greenspace varied by neighborhood socioeconomic status. Participants (N = 4,800) from the Brazilian Longitudinal Study of Adult Health (ELSA-Brasil) residing in two Brazilian state capitals were evaluated in Visits 1 (2008-2010), 2 (2012-2014) and 3 (2017-2019). Greenspaces were categorized by quintiles of positive Normalized Difference Vegetation Index (NDVI) scores. Physical activity frequency was given by the number of visits at which participants reported moderate/vigorous physical activity (none, 1 or 2, and 3 visits). We used multinomial logistic regression. After adjustment for age, sex, education, research center, residence in slums, individuals in the 4th and 5th NDVI quintiles showed 73% higher odds of physical activity over 3 visits than those in the 1st quintile (4th quintile: 95%CI = 1.24-2.43; 5th quintile: 95%CI = 1.24-2.41). The strength of the association was attenuated after adjustment for perceived safety. After adjustment for contextual factors quantity of sidewalks and streetlights, the OR for the 4th and 5th NDVI quintiles decreased to 1.66 (95%CI = 1.18-2.33) and 1.62 (95%CI = 1.16-2.28), respectively. Finally, after including average household income per capita, the OR for physical activity in 3 visits for the 4th and 5th NDVI quintiles decreased to 1.48 (95%CI = 1.04-2.12) and 1.43 (95%CI = 1.00-2.04; p = 0.053), respectively. Greater greenspace contributed to sustained physical activity during the eight years of follow-up, indicating the potential contribution of public greenspaces to reducing health-related inequalities.

Association between Neighborhood Stressors and Allostatic Load in Breast Cancer Survivors: The Pathways Study.

Allostatic load (AL) is an intermediary outcome through which neighborhood drivers of health may impact cancer survivorship outcomes. We examined associations of neighborhood stressors and AL in 2,553 women with breast cancer recruited into the Pathways Study in 2006-2013. AL score was derived from biomarkers in the cardiovascular, metabolic, and immune domains of physiological stress measured within 3 years after baseline. Neighborhood data were appended to participants' geocoded baseline addresses. Odds ratios (OR) and 95% confidence intervals (CI) were used to estimate associations between neighborhood stressors and risk of higher AL score. Adjusting for age and stage, high AL was positively associated with low versus high neighborhood socioeconomic status (nSES; OR=2.24, 95% CI=1.61-3.12) and green space (OR=1.55, 95% CI=1.18-2.03); high versus low traffic (OR=1.32, 95% CI=1.01-1.72), crime (OR=1.32, 95% CI=1.05-1.67), and household crowding (OR=1.57, 95% CI=1.22-2.01); and more versus no fast-food restaurants (OR=1.50, 95% CI=1.21-1.84). Associations remained for nSES and fast-food restaurants after co-adjustment with other neighborhood stressors, and for fast-food restaurants after additional adjustment with individual sociodemographic and lifestyle factors. Our preliminary findings can inform further studies of the physiological effects of neighborhood stressors, which collectively may help improve survivorship outcomes for the growing population of breast cancer survivors.

Neighbourhood walkability and greenspace and their associations with health-related fitness in urban dwelling Canadian adults

ObjectiveMuscular strength and body composition are important components of health-related fitness (HRF). Grip strength and body fat percent, in particular, are associated with chronic disease and affected by health behaviours. Evidence suggests relationships between the neighbourhood built environment (BE) and HRF exist, however, few studies have focused on grip strength and body fat percent. Therefore, our study aimed to estimate the sex-specific associations between the neighbourhood BE, grip strength, and body fat percent among urban-dwelling Canadian adults. MethodsWe analyzed cross-sectional survey and HRF data collected in 2011-2015 from 4052 males and 7841 females (Alberta's Tomorrow Project, Canada). Grip strength and body fat percent were measured via handgrip dynamometry and bioelectrical impedance analysis, respectively. Walkability (Canadian Active Living Index) and greenness (Normalized Difference Vegetation Index) estimates were linked to participant data. Sex-stratified covariate-adjusted linear regression models estimated the associations between the BE and HRF variables. ResultsWalkability was negatively associated with grip strength and body fat percent in males (β -0.21, 95%CI: -0.31 to -0.11 and β -0.08, 95%CI: -0.15 to -0.02, respectively) and females (β -0.06, 95%CI: -0.10 to -0.01 and β -0.08, 95%CI: -0.14 to -0.02, respectively). Greenness was positively associated with grip strength in males (β 6.99, 95%CI: 3.62 to 10.36) and females (β 2.72, 95%CI: 1.22 to 4.22) but not with body fat percent. Controlling for physical activity and sitting did not attenuate these associations. ConclusionCharacteristics of the neighbourhood BE appear to be associated with muscular strength and body composition, independent of physical activity and sedentary behaviour.

Social Determinants of Health, Risk and Resilience against Alzheimer's Disease and Related Dementias: The Healthy Brain Initiative.

Few studies have investigated associations between perceived social determinants of health (SDOH) and Alzheimer's disease and related dementia (ADRD) biomarkers or between SDOH and resilience against ADRD. To examine associations between perceived and objective SDOH and ADRD-related outcomes. We used cross-sectional data on≥50-year-olds without dementia in the Healthy Brain Initiative (n = 162). Questionnaires captured trust in neighbors and indices of perceived neighborhood greenspace access, time spent in neighborhood greenspaces, and interpersonal discrimination. Residential addresses were linked to 2021 Area Deprivation Index scores. The Vulnerability Index (VI) is based on 12 dementia risk factors (e.g., age, race/ethnicity, diabetes) and Resilience Index (RI) is based on 6 protective factors (e.g., diet, mindfulness, physical activity). Cognitive measured included number symbol coding task and Montreal Cognitive Assessment. Biomarkers included Aβ42/40 and pTau-217/npTau-217, hippocampal and white matter hyperintensity volume, lipoprotein A, and high-sensitivity c-reactive protein. Perceived greater access to greenspaces (estimate = 2.83, 95% CI = 1.40-4.26) and greater time in neighborhood greenspaces were associated with greater RI scores (estimate = 2.30, 95% CI = 1.24-3.35). Reporting greater discrimination (estimate = 0.10, 95% CI = 0.04-0.16) and living in higher deprivation neighborhoods were associated with greater VI scores (estimate = 0.017, 95% CI = 0.003-0.032). Greater discrimination was associated with greater white matter hyperintensity volume (estimate = 0.27, 95% CI = 0.04-0.51). Perceived greenspace access and time spent in greenspaces were associated with resilience against ADRD, and interpersonal discrimination was associated with vulnerability to ADRD. Future work needs to validate perceived SDOH measures, examine associations in racially/ethnic diverse populations, and investigate longitudinal associations between SDOH and ADRD-related biomarkers.

Neighbourhood green space and loneliness in middle-aged and older adults: Evidence from WHO Study on Global Ageing and Adult Health in China

Loneliness may contribute to chronic diseases, while neighbourhood green space is increasingly understood to benefit health. However, whether green space is associated with loneliness is less understood, especially for an ageing population. This study aims to explore the relationship between different measures of green space and loneliness among middle-aged and older adults (N = 8383) based on a national cohort. Loneliness was measured with a yes-or-no (binary) self-reported question, while the availability of residential green space was assessed with the normalised difference vegetation index (NDVI) and proportion of neighbourhood public parks. Multilevel logistic regression models, stratified and mediation analysis were used to test whether green space availability was associated with loneliness. The results showed that both forms of residential green space were negatively associated with the risk of loneliness, even after adjustments for covariates. These associations were partially mediated by social cohesion and modified by socioeconomic status and age; residents who were males, at least 60 years old, had lower incomes, or had no high school degree showed protective associations of residential green space on loneliness in some stratified models. These findings indicate that residential green space plays an important role in loneliness risk reduction in middle-aged and older adults, so policymakers can consider urban greening as part of their comprehensive plans to support the mental health of ageing adults.

Associations of neighborhood greenspace, and active living environments with autism spectrum disorders: A matched case-control study in Ontario, Canada

BackgroundIncreasing evidence links early life residential exposure to natural urban environmental attributes and positive health outcomes in children. However, few studies have focused on their protective effects on the risk of autism spectrum disorder (ASD). The aim of this study was to investigate the associations of neighborhood greenspace, and active living environments during pregnancy with ASD in young children (≤6 years). MethodsWe conducted a population-based matched case-control study of singleton term births in Ontario, Canada for 2012–2016. The ASD and environmental data was generated using the Ontario Autism Spectrum Profile, the Better Outcomes Registry & Network Ontario, and Canadian Urban Environmental Health Research Consortium. We employed conditional logistic regressions to estimate the odds ratio (OR) between ASD and environmental factors characterizing selected greenspace metrics and neighborhoods conducive to active living (i.e., green view index (GVI), normalized difference vegetation index (NDVI), tree canopy, park proximity and active living environments index (ALE)). ResultsWe linked 8643 mother-child pairs, including 1554 cases (18%). NDVI (OR 1.034, 0.944–1.024, per Inter Quartile Range [IQR] = 0.08), GVI (OR 1.025, 95% CI 0.953–1.087, per IQR = 9.45%), tree canopy (OR 0.992, 95% CI 0.903–1.089, per IQR = 6.24%) and the different categories of ALE were not associated with ASD in adjusted models for air pollution. In contrast, living closer to a park was protective (OR 0.888, 0.833–0.948, per 0.06 increase in park proximity index), when adjusted for air pollution. ConclusionsThis study reported mixed findings showing both null and beneficial effects of green spaces and active living environments on ASD. Further investigations are warranted to elucidate the role of exposure to greenspaces and active living environments on the development of ASD.

Linking neighborhood green spaces to loneliness among elderly residents—A path analysis of social capital

Population aging poses a central challenge to human society in the 21st century, and a notable correlation has been found between loneliness and age, particularly old age. Loneliness not only substantially impacts the physical and mental well-being of elderly residents but also escalates the burden of old-age care and medical services. As the global trend of aging continues to intensify, tackling population aging and its associated problems has become a common strategic choice of nations worldwide. Grounded in the mediating effect of social capital, this paper explores both the impact and mechanism by which the use of neighborhood green spaces mitigates loneliness among elderly residents. The findings show that, in terms of overall effects, the use of neighborhood green spaces effectively mitigates negative living conditions and psychological problems, thereby fostering the alleviation of loneliness in elderly residents. From a mediating effects perspective, relationship networks, interpersonal trust, and reciprocity norms within social capital play distinct roles in the relationship between the use of neighborhood green spaces and the reduction of loneliness in elderly residents. The direct effect is not statistically significant, which implies a comprehensive mediating role of social capital. In aging neighborhoods, it is imperative to recognize the role of green spaces in promoting elderly well-being and to ensure ample provision of such spaces. Additionally, considering the decline in physical functions among elderly residents, it is crucial to acknowledge their unique sensory thresholds and usage characteristics and compare these to other age groups. Thus, implementing appropriate aging-friendly reforms in green space planning becomes essential to align the allocation of green space resources with the specific needs of elderly residents while catering to the broader population.

Abstract P104: Geospatially Varying Relationships of Green and Blue Spaces With Biomarkers of Stress and Cardiometabolic Risk in Racially and Ethnically Diverse Children

Introduction: Neighborhood green (e.g., parks) and blue (e.g., lakes) spaces have been associated with reduced stress and cardiometabolic risk (CMR), but research is limited in socially vulnerable urban communities affected by structural racism and redlining. This study explored the spatial correlation between green and blue spaces and cortisol levels, BMI percentile, waist circumference (WC), pulse, and systolic (SBP) and diastolic blood (DBP) pressure in a sample of racially/ethnically diverse children. Methods: We used cross-sectional data from the Family Matters cohort study, consisting of 1307 racially/ethnically diverse families with children (age 7±1.5 yrs). Participant addresses were matched to the US 2010 Census tract attributes. We used 246 sample locations across 149 census tracts in the 7-county Twin Cities, MN, metro area. Green and blue spaces were retrieved from the Twin Cities Metropolitan Council. Hair cortisol (chronic stress biomarker), BMI, WC, pulse, SBP and DBP were objectively measured in a subsample of 246 children. We used Decision Tree and Geographically Weighted Regression (GWR) to examine the spatially varying associations of CDC’s Social Vulnerability Index (SVI) and green and blue spaces (independent variables) with biomarkers of stress and CMR (dependent variables). SVI reflects four themes: socioeconomic status, household composition and disability, racial and ethnic minority status and language, and housing type and transportation. Results: Northwest Minneapolis was identified as a hotspot for elevated cortisol, BMI, and WC, while east St. Paul was a hotspot for elevated BMI and WC. Decision trees indicated that green and blue spaces explain variation in accumulated cortisol after tract socioeconomic status and racial and ethnic minority status. GWR revealed nonuniform relationships with the highest explanatory power in high social vulnerability hotspots. GWR’s R 2 for cortisol (0.07), BMI (0.14), and WC (0.14) were driven by hotspots where local R 2 was 2-5 times stronger than areas not identified as hotspots indicating robust geographical variations in the northern areas (areas of high social vulnerability) and distance from green and blue spaces. Patterns were inconsistent for pulse, SBP, and DBP. Conclusions: The spatially varying relationships of green and blue spaces with biomarkers of stress and CMR in children were heterogeneous, possibly indicating different mechanisms across biomarkers and geographical areas. Higher cortisol levels, BMI percentile, and WC in northern Twin Cities areas may reflect the legacy of structural racism and redlining, which have resulted in inequitable use of green and blue spaces for minoritized communities. Future interventions co-developed with local communities to improve green and blue spaces’ access and use, as well as to reduce disparities in stress and CMR, are needed to advance health equity.